What is hashtag?
A keyword with a # in front that ties content to a topic.
Hashtags help content get found in search and on topic pages. Instagram allows at most five hashtags per post.
A few specific tags about the topic, place and product work better than generic, crowded ones. Hashtags don't boost reach on their own; the content itself decides.
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Updated: October 12, 2026 · All terms
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